|Publication number||US7763788 B2|
|Application number||US 12/221,281|
|Publication date||Jul 27, 2010|
|Filing date||Aug 1, 2008|
|Priority date||Aug 1, 2008|
|Also published as||US20100024624|
|Publication number||12221281, 221281, US 7763788 B2, US 7763788B2, US-B2-7763788, US7763788 B2, US7763788B2|
|Inventors||Martin Richard Wachter|
|Original Assignee||Martin Richard Wachter|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (26), Referenced by (7), Classifications (4), Legal Events (1)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This application is entitled to, and claims the benefit of, priority from U.S. Provisional Application Ser. No. 60/572,537, filed May 19, 2004 and from U.S. Non-Provisional application Ser. No. 11/129,919, filed May 16, 2005.
1. Field of the Invention
The present invention relates in general to percussion instruments, and more particularly to a novel method for muting the sound of a metal acoustic cymbal.
2. Background Information
Percussion cymbal instruments are a class of musical percussion instruments having a playing (usually upper) surface and a second (usually lower) surface, that are played by striking the playing surface with a stick or other implement, to produce a spectrum of sound caused by the vibrations of the cymbal.
The playing surface could be made from almost any material, although most percussion cymbal manufacturers use some type of metal alloy which is molded or die cut into various shapes and sizes, typically formed as a round disc with a mounting hole in the center. The mounting hole in the center permits the cymbal to be mounted centrally on a stand, allowing the cymbal to remain balanced. When struck, the cymbal will vibrate and swing on the stand in order to create its unique sound.
The purposes of muting the vibrations from a percussion cymbal instrument include A) reducing the sound level to allow playing or practicing without generating the full sound level and B) reducing direct acoustical sound when the cymbal is used as an electronic cymbal trigger, used to convert vibrations into electronic signals, so as to avoid interference with the electronically generated sound.
I provide here, a system for reducing the vibrations and muting the natural sounds of a percussion cymbal instrument.
The ideal design for a cymbal muting system would permit the cymbal to retain its normal characteristics (natural look, feel, playability, and natural swinging motion) while reducing the audible sound vibrations which occur when struck.
Current systems may cause the cymbal to become unbalanced and cumbersome to operate. Muting devices mounted on the playing surface of the cymbal change look, feel, and stick response of the instrument. Unbalanced striking surfaces require additional mechanisms to prevent the striking surface from unintentionally rotating and tipping over. The natural swinging motion of the cymbal may be reduced or eliminated Some devices result in the cymbals no longer looking like real cymbals. For examples of problems in the prior art, see U.S. Pat. Nos. 5,959,227 and 6,686,528 (which require cumbersome additional hardware), U.S. Pat. No. 5,959,227 (which requires the use of unbalanced devices mounted on the top playing surface of the cymbal), U.S. Pat. No. 6,686,528 (which reduces the natural swinging motion), and U.S. Pat. Nos. 4,037,509 and 5,561,254 (which change the color and appearance of the cymbal), all of which are incorporated herein by reference.
I have invented a better device for reducing the vibrations of percussion cymbal instruments.
The muting system comprises a flexible, preferably plastic, dampening layer and an adhesive layer to bond the flexible layer to the second surface of the cymbal. The plastic layer may comprise a centrally located hole in the center to permit the pass through or a typical mounting device or cymbal stand. The plastic layer can cover the entire second surface of the cymbal (save the mounting hole) or a portion of it. Ideally, the plastic layer would be the same outside diameter as the cymbal in order to maximize the dampening effect.
The adhesive layer is applied to one side of the plastic layer and then is bonded to the second surface of the cymbal. Means are provided for proper adhesion of the plastic layer to the metal surface of the cymbal as to allow easy removal and reuse of the muting system or a permanent bond, depending on the user's preference.
In accordance with another feature of the present invention, the flexible plastic layer can be made from a clear plastic material, allowing the natural color of the cymbal to be visible through the plastic muting layer. This layer provides a protective coating on the second surface of the cymbal, thus not affecting the playability or aesthetics of the playing surface. Although many materials could be used to provide this layer, I used a plasticized flexible PVC (polyvinyl chloride). The clear PVC plastic layer allows the second surface of the cymbal to appear unaffected as the natural surface of the cymbal is allowed to show through the clear layer.
In general I have found that 0.080″ and 0.060″ layers are preferable because they are a) readily available sizes b) not too thin as to limit the amount of vibration reduction, and c) not too thick as to change the weight and natural playability of the cymbal.
The vibration dampening device may be a ring-shaped gasket, which is preferably thick enough to limit the vibratory response of the cymbal, is transparent and does not change the balance of the cymbal when bonded to the cymbal. A suitable material is Poly Vinyl Chloride (PVC).
In addition, I have found that the durability and uniformity of the dampening is enhanced if a sandwich of at least two plastic layers is used, with an adhesive layer between the two plastic layers and an adhesive layer between one of the plastic layers and the cymbal.
The adhesive layer may be in the form of a double-sided transfer adhesive.
The advantages of my invention over previously invented vibration dampening systems include the following:
The objects of my invention are:
The foregoing and still other objects of this invention will become apparent, along with various advantages and features of novelty residing in the present embodiments, from study of the following drawings, in which:
A clear flexible PVC ring shaped device is attached to the underside of a cymbal using an adhesive that allows a bond of metal and PVC plastic. The clear PVC layer provides the dampening or muting effect by limiting the vibratory response of the cymbal while also allowing the natural surface of the cymbal to show through the transparent PVC material, thus a cymbal with my device attached will appear to have no device attached at all, but will have a limited vibratory response.
The components that make up my invention are as follows:
While the preferred embodiment has been described, my invention could be produced using slightly different components and options. For example:
Although most metal cymbals are made from a brass or bronze alloy, any material that vibrates could be used to make the cymbal.
Although the cymbal used in my invention contains a bell, the bell is not required and cymbals without a bell may be used.
Although the PVC layer's outside diameters is the same as the cymbal's diameter, a different outside diameter could be used for either the cymbal or PVC layer. Although the inside dimension of the PVC ring matches the diameter of the cymbal's bell, the inside dimension of the PVC ring could be any size as long as it does not obstruct the cymbal's center mounting hole.
Although the PVC layer and cymbal are in the shape of a circle, any shape cymbal and any shaped PVC layer may be used.
Although the round striking surface of the cymbal is superior, any shaped striking surface for the cymbal may be used.
Although a clear acrylic pressure sensitive adhesive is a superior permanent bonding method, several methods of permanent, semi-permanent, or temporary adhesion means could be utilized to bond the PVC layer to the cymbal including epoxy, tape, rivets, screws, double sided adhesive tape, or glue.
Although the preferred embodiment mounting of the clear PVC layer to the bottom (i.e., second) surface of the cymbal is generally superior because it does not change the top (i.e., playing) surface, mounting the PVC layer to the top is also possible.
While effective, the application described above is subject to some disadvantages in that variances in the amount of plasticizer in a given part of the PVC layer, or chemical reactions over time between the adhesive and plasticizers in the layers may lead to partial or complete separation of layers or of the plastic from the metal cymbal thereby causing the entire dampening layer to become ineffective in reducing the vibratory response of the cymbal.
This problem may be solved by using a layered system, comprising two pieces of plastic and two different adhesive layers. A convenient way of providing the adhesive layers is to use adhesive transfer tape. Thus, a suitable sandwich of layers may be created as follows, as shown schematically in
A device for muting a cymbal in which the cymbal has a first or playing surface, being the surface which is struck when the cymbal is played, and a second surface, and having a center mounting hole, is manufactured by forming a ring comprising a sandwich comprising first and second adhesive layers, a polyester film layer and a PVC layer, each of said layers having a first and second side (each side being the same, and the designations first and second side being used only to facilitate description of the structure of the sandwich), wherein the first side of the first adhesive layer is adhesively attached to the first side of the polyester film layer, the first side of the second adhesive layer is adhesively attached to the second side of the polyester film layer and the second side of the second adhesive layer is adhesively attached to the first side of the PVC layer as illustrated in
While a specific embodiment of the invention has been shown and described in detail to illustrate the application of the principles of the invention, it will be understood that the invention may be embodied otherwise without departing from such principles and that various modifications, alternate constructions, and equivalents will occur to those skilled in the art given the benefit of this disclosure. Thus, the invention is not limited to the specific embodiment described herein, but is defined by the appended claims.
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